/**
 * Rate limiter for update checks
 * Prevents excessive npm registry queries
 */
export interface RateLimitState {
    lastCheck: string;
    checksToday: number;
    date: string;
    packageVersions: Record<string, string>;
}
export declare function loadState(): RateLimitState;
export declare function saveState(state: RateLimitState): void;
/**
 * Whether this is a CI run. CI systems set `CI` to `true`, `1` or other values, so any value
 * except empty, `0` or `false` counts (GitHub Actions sets CI=true). Matching only `true` let CI=1 runs check for updates and
 * install one (`npm install @claude-flow/cli@<latest>`) into the working directory mid-run.
 */
export declare function isCI(env?: NodeJS.ProcessEnv): boolean;
export declare function shouldCheckForUpdates(intervalHours?: number): {
    allowed: boolean;
    reason?: string;
};
export declare function recordCheck(packageVersions: Record<string, string>): void;
export declare function getCachedVersions(): Record<string, string>;
export declare function clearCache(): void;
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